To fully leverage the advantages of mechanization and informatization in tunnel boring machine(TBM)operations,the authors aim to promote the advancement of tunnel construction technology toward intelligent development...To fully leverage the advantages of mechanization and informatization in tunnel boring machine(TBM)operations,the authors aim to promote the advancement of tunnel construction technology toward intelligent development.This involved exploring the deep integration of next-generation artificial intelligence technologies,such as sensing technology,automatic control technology,big data technology,deep learning,and machine vision,with key operational processes,including TBM excavation,direction adjustment,step changes,inverted arch block assembly,material transportation,and operation status assurance.The results of this integration are summarized as follows.(1)TBM key excavation parameter prediction algorithm was developed with an accuracy rate exceeding 90%.The TBM intelligent step-change control algorithm,based on machine vision,achieved an image segmentation accuracy rate of 95%and gripper shoe positioning error of±5 mm.(2)An automatic positioning system for inverted arch blocks was developed,enabling real-time perception of the spatial position and deviation during the assembly process.The system maintains an elevation positioning deviation within±3 mm and a horizontal positioning deviation within±10 mm,reducing the number of surveyors in each work team.(3)A TBM intelligent rail transportation system that achieves real-time human-machine positioning,automatic switch opening and closing,automatic obstacle avoidance,intelligent transportation planning,and integrated scheduling and command was designed.Each locomotive formation reduces one shunter and improves comprehensive transportation efficiency by more than 20%.(4)Intelligent analysis and prediction algorithms were developed to monitor and predict the trends of the hydraulic and gear oil parameters in real time,enhancing the proactive maintenance and system reliability.展开更多
随着无线物联网(Internet of Things,IoT)业务的兴起,海量设备的接入,无线网络受攻击的可能性大大增加,无线IoT设备的安全问题越来越重要。提出了一个基于深度机器学习长短期记忆(Long Short-Term Memory,LSTM)模型的无线IoT设备识别方...随着无线物联网(Internet of Things,IoT)业务的兴起,海量设备的接入,无线网络受攻击的可能性大大增加,无线IoT设备的安全问题越来越重要。提出了一个基于深度机器学习长短期记忆(Long Short-Term Memory,LSTM)模型的无线IoT设备识别方法,用于甄别非法入侵的设备或者发现已经被入侵后通信异常的设备。所提方法的创新点在于通过深度机器学习对IoT设备公开传输的帧头信息进行分析识别,而不必深入分析承载信息,不依赖于易被修改和伪装的IP地址等身份信息,因此不受通信信息加密的影响,也不受各类伪装地址及其他入侵方法的影响。所提方法的应用可以自动快速地识别出非授权设备或者被入侵的授权设备,更好地保障网络安全。展开更多
文摘To fully leverage the advantages of mechanization and informatization in tunnel boring machine(TBM)operations,the authors aim to promote the advancement of tunnel construction technology toward intelligent development.This involved exploring the deep integration of next-generation artificial intelligence technologies,such as sensing technology,automatic control technology,big data technology,deep learning,and machine vision,with key operational processes,including TBM excavation,direction adjustment,step changes,inverted arch block assembly,material transportation,and operation status assurance.The results of this integration are summarized as follows.(1)TBM key excavation parameter prediction algorithm was developed with an accuracy rate exceeding 90%.The TBM intelligent step-change control algorithm,based on machine vision,achieved an image segmentation accuracy rate of 95%and gripper shoe positioning error of±5 mm.(2)An automatic positioning system for inverted arch blocks was developed,enabling real-time perception of the spatial position and deviation during the assembly process.The system maintains an elevation positioning deviation within±3 mm and a horizontal positioning deviation within±10 mm,reducing the number of surveyors in each work team.(3)A TBM intelligent rail transportation system that achieves real-time human-machine positioning,automatic switch opening and closing,automatic obstacle avoidance,intelligent transportation planning,and integrated scheduling and command was designed.Each locomotive formation reduces one shunter and improves comprehensive transportation efficiency by more than 20%.(4)Intelligent analysis and prediction algorithms were developed to monitor and predict the trends of the hydraulic and gear oil parameters in real time,enhancing the proactive maintenance and system reliability.
文摘随着无线物联网(Internet of Things,IoT)业务的兴起,海量设备的接入,无线网络受攻击的可能性大大增加,无线IoT设备的安全问题越来越重要。提出了一个基于深度机器学习长短期记忆(Long Short-Term Memory,LSTM)模型的无线IoT设备识别方法,用于甄别非法入侵的设备或者发现已经被入侵后通信异常的设备。所提方法的创新点在于通过深度机器学习对IoT设备公开传输的帧头信息进行分析识别,而不必深入分析承载信息,不依赖于易被修改和伪装的IP地址等身份信息,因此不受通信信息加密的影响,也不受各类伪装地址及其他入侵方法的影响。所提方法的应用可以自动快速地识别出非授权设备或者被入侵的授权设备,更好地保障网络安全。
